Electrically-operated punka and the like.



PATENTED APR. 21, 1908.

H. H. YOUNG. VELEOTRICALLY OPERATED PUNKA AND THE LIKE.

APPLICATION FILED JAN. 2. 190B.

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HARRY HOWLETT YOUNG, OF COLOHESTER, ENGLAND, ASSIGNOR TO HIMSELF, AND BERGTHEIL UNITED STATES PATENT OFFICE.

AND YOUNG LIMITED, OF LONDON, ENGLAND, A CORPORATION OF GREAT BRITAIN.

ELECTRICALLY-OPERATED PUNKA AND THE LIKE.

Specification of Letters Patent.

Patented April 21, 1908.

Application filed January 2, 1908. Serial No. 408,974.

To all whom it may concern:

Be it known that I, HARRY HowLET'r YOUNG, a subject of the King of Great Britain and Ireland, residing at Oolchester, in the county of Essex, England, have invented new and useful Improvements in Means for Electrically Operating Punkas and the Like, of which the following is a specification.

This invention relates to the operation of punkas and the like electrically and has for its object the provision of means for carrying out the same in a simple and effective manner and at a moderate cost.

The invention consists in the combination of a rotary electro motor with a punka frame and means by which the high speed rotary motion of the motor is transmitted to the oscillatory punka so that the proper motion can be given to the punka for which pur ose adjustments of the transl'uitting mec anism have to be provided for.

In order that the invention may be the better understood I will now proceed to describe the same in relation to the accompanying drawing, reference being had to the letters and figures marked thereon.

Figure 1 is a front view of an electro-motor driving a pair of punkas as fitted on board ship where the head room is small. Fig. 2 shows an enlarged view in perspective of one punka and the electro-motor.

Upon the under side of the deck a I mount an electro-motor b in an inverted position having on its shaft 0 pulleys d. On each side of the motor I) I pivotally mount a punka frame e so that it will oscillate about an axis which is preferably parallel to the axis of the motor b. Upon the frame 6 is pivoted an arm f carrying at its end a wiper or friction blade 9 adapted to contact with and receive motion from one of the pulleys cl of the motor 11. The arm is extended backward beyond the axis and is attached to two spiral springs h h which are connected to the punka frame e by means of a screw attachment so that the tension of the said springs can be adjusted to suit varying conditions of drive and rate of movement. The end portions of the operative surfaces of the wiper or friction blade g are disposed at an angle to the circular path of motion of the point in the frame 6 which intersects the axial line of the pulley so as to give a lead for the pulley to contact with and grip the friction. blade g. By this arrangement the frame 6 can continue its oscillation beyond the period of contact with the blade while the latter is gradually brought to rest and then return to make contact with the other side of the pulley without shock or jar.

Having now described my invention, what I claim and desire to secure by Letters Patent is Means for operating punk-as and the like, consisting of a rotary electro-motor and an oscillating punka frame in combination with a friction pulley carried by the said motor, a friction blade pivotally carried by said frame and adapted to contact with and be driven by said pulley and adjustable springs connected to said frame and said friction blade adapted to maintain the said blade in operative contact with the said pulley substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HARRY HOW'LETT YOUNG. l/Vitnesses:

STANLEY SMITH, HERBERT Bass. 

